Biology, Unit 1, Leitner

Question 1

CELL

Answer 1

The smallest unit that can perform all life processes; covered by a membrane and have DNA and cytoplasm

Question 2

MITOSIS

Answer 2

the division of eukaryotic cells

Question 3

GENES

Answer 3

one set of instructions for an inherited trait

Question 4

MEIOSIS

Answer 4

a process in cell division during which the number of chromosomes decreases to half the original number by two divisions in the nucleus, which results in the production of sex cells

Question 5

CLASSIFICATION

Answer 5

the division of organisms into groups, or classes, based upon specific characteristics

Question 6

TAXONOMY

Answer 6

the science of describing, classifying, and naming organisms

Question 7

ECOSYSTEM

Answer 7

A community of organisms and their abiotic, or non-living, relations

Question 8

FOOD WEB

Answer 8

a diagram that shows the feeding relationships between organisms in an ecosystem

Question 9

FOOD CHAIN

Answer 9

the pathway of energy transfer through various stages

Question 10

NUTRIENT

Answer 10

a substance in food that provides energy or helps form body tissues and that is necessary for life and growth

Question 11

HABITAT

Answer 11

place where an organism or a community of organisms lives.

Question 12

DICHOTOMOUS KEY

Answer 12

An aid that is used to identify organisms and that consists of the answers to a series of questions

Question 13

ECOLOGY

Answer 13

The study of the interactions of living organisms with one another and with their environment